Although the feature is very temperamental in the first beta, it clearly leads the way to a future with a much more diverse lineup of screen resolutions. This allows developers to test for future iOS devices that do not exist today — such as 4.7 inch and 5.5 inch iPhones for example.

9to5Mac also reported that Apple was working on iPhones with screens featuring resolutions of 1704×960. This new ‘multi resolution’ feature should help developers prepare for the future, even without Apple explicitly acknowledging new form factors are in the works.